Casting-machine.



A. LEINWEBER'.

CASTING MACHINE.

APPLICATION FILED nov'. 19. 1912.

Patented July 4, 1916.

5 SHEETS-SHEET 1.

AILEINWEBER. CASTING MACHINE.

APPLICATION FILED NOV. 19.1912. I

Patented J uly 4 1916.

5 SHEETS-SHEET 2.

A. LEINWEBER.

CASTING MACHINE.

APPLiCATION FILED NOV. 19.1912.

Patented Ju1y4, 1916.

5 SHEETSSHEET 3.

A. LEINWEBER.

CASTING MACHINE.

APPLICATION FILED NOV. 19, 1912.

A. LEINWEBER.

CASTING MACHINE.

APPLICATION FILED NOV. 19. 19I2. 1,189,976. Patented July 4,1916.

5 SHEETSSHEET 5.

ADOLF LEINWEBER, 0F MUNICH, GERMANY.

CASTING-MACHINE.

Application filed November 19. 1912.

1 '0 all whom it may concern:

Be it known that I. AnoLr LEINWEBER, a subject of the Emperor of Germany, and residing at Munich, Bavaria, Germany, have invented certain new and useful Improvements in (asting-hlzu-hines, of which the following is a specification.

In the art of casting the printing plates for rotary printing presses there are known among other casting machines also such in which the liquid metal is forced from the melting pot. into the mold, by means of a piston pump. These casting engines do not allow of an economical working, and they are. furthermore. subject to too great a wear and tear, especially with regard to the melting pot.

The objects or the present invention are first. to do away with these drawbacks. and second. to produce a machine which is able to cast the plates quickly and without danger. although there isbut one pump employed. without any turning or swinging device. This novel machine is also very durable. as well as simple. It is provided with distributing pipes, which are arranged at the two sides of a hand pump located in the melting pot, which is of a corresponding width and increases gradually in depth from the place of introduction of the metal to be melted. Said pipes are connected with said pump one after the other, which may be controlled from the molds by the opening and closing of their (preferably balanced) covers or lids.

In order to make my invention more clear, I refer to the accompanying drawings in which similar letters denote similar parts and in which Figure 1 is a longitudinal section through my improved casting machinerFig. 2 is a plan of same; Figs. 3 and 4 show a cross section and a longitudinal section through the distributing pipes; Fig. 5 is a detail view partly in section of the spring actuatedracks and the lever system operating the same. Fig. 6 is a section on the line AB of Fig. 5. Fig. 7 is a section on the line CD of Fig. Fig. 8 is a detail view of the pointer and the notches receiving the same during the rotation of the slide. Fig. 9 is a detail View of the system of levers for actuating the racks.

Fig. 10 is a side view, partly iirsection of. the bevel wheel gearing operating the sleeve-axle for the bell-crank levers. Fig. 11 is a detail view of one of the releasing levers. Fig. 12

Specification of Letters Patent.

Patented July 4, 1916. Serial No. 732,289. 1

is a diagrammatic view of the rangement.

The melting pot a, the bottom of which is inclined from the charging place 6 to the opposite end. contains a hand pump 0, the piston of which is provided in the usual manner with piston rings and a return valve, and is moved up and down by means of ahand lever. These details of the pump are but partly represented, because they are known and of no particular significance. The pump is connected at its side or Sides wlth one or more distributors (I, each of which terminates in an upward direction in a plurality of distributing pipes, for instance three, such as 0 0 6 (Fig. 8). Each of these pipes leads to a mold and serves to fill the latter with molten metal from the melting pot. The construction of the mold 17 and the manner of leading the distributing pipes 0 6 e to the-same is clearly illustrated in Fig. 1. Each of the molds consists of a suitable frame carrying a trough 1S removable cheeks 19 and a core w fulcrumed at I and provided with a counterweight 20. The rear wall 21 of the mold 17 extends above the trough 1S and forms togethcr with the tongueor bill-shaped extension 22 and the cheeks 19 of equal height, a funnel which leads to the mold proper. A matrix is introduced into the mold 18, wher after the lateral cheeks are mounted so as to pointer aroverlap the lateral edges of the said matrix securing the same into place. Hereafter, the corea: is introduced by turning it around its fulcrum c and then the mold is ready to be charged with the mold metal carried from. the melting pot by the distributing pipes 6 e e. The pipes 6 0 6 branch off from the distributer in the same plane and in the plane of a common rotary slide 9 (Figs. 3 and 4) provided at saidplaces. lVhile the parts are in their normal positions, the opening it of the slide is closed and is located which rotates the rod or shaft 2' carrying the slide 9 until it is again put out of action by the roller p which is arranged atithe side of the toothed wheel Z: corresponding to said rack.

The three rollers 72 ,1), 7? are in the same manner distributed in a circle as the branching places f 7, f and three positively coupled toothed wheels 71:, W, k are correspondingly distributed, or in other words: for each toothed wheel a roller is provided and the rollers are positioned with respect to each other in such a manner that if projected upon a plane vertical to the shaft of the toothed wheels 70, their axes fall upon three lines dividing a circle into three equal segments, the center of which is formed by the point of intersection of said three lines. Therefore, the core of the mold 21 will always bring the opening 12 in communication with the branch 7' of the distributing pipe 0. After the mold has been charged the slide is returned into its lowermost position. After the mold has been filled the communication is interrupted automatically or by hand by an axial displacement of said slide.

In order to actuate the slide for operating in the described manner, it is firmly connected with a rotary rod '5, which is connected with as many rack gears k Z if, Z is, Z, as there are distributing pipes connected with the distributer, and which is also-connected with a hand lever m having its fulcrum at n and which is secured in its two end positions by a leaf spring 0, provided with a handle which has suitable notches for the reception of said lever m.

The rod 2' stands under the influence of a spring 13, which, when a mold is opened or closed after the spring 0 has released the le ver m, depresses the rod into a position in which all distributing pipes are closed. The release of the arm m'is effected upon the opening or closing of a mold, as will be more fully described hereinafter.

The cog wheels Z 7., I. are longitudinally displaceable upon the rotary connecting rod 2' and they are provided with lateral rolls or lugs which interrupt the connection between the racks Z Z Z and the cog wheels it, If, k by lifting the former as soon as that rack gear, which has been actuated on the closing of a mold, has turned the rod i far enough to adjust the exit opening 72, of the rotary slide in proper position to the entrance of the respective distributing pipe 0 or c or e. The racks Z Z Z which are preferably acted on by springs 14 are operated by means of a system of levers (in the direction indicated by the arrow in Fig. which also moves the racks back into their former position when the mold is opened, as is also more fully described hereinafter. When thus being moved the racks Z Z Z are brought by the lugs 1) into the range of action of catching arms 1 f, q (Fig. 7), which prevent the ,racks when returning to come into gear with the respective cogwheels, so that consequently the rotary slide remains unaffected. In the sectional drawing (Fig. 7) for instance the middle rack 7 is shown lifted and caught or checked by the arm 92.

The system of levers for actuating the racks I, 7 Z" as shown in Figs. 1 and 9, consists of bars 5 F, t provided with lugs r and a and of a bell crank lever 11 the arms a. 1/ a coacting with the racks Z, 7?, Z and the bars 2, F, 15 respectively. The lugs r and s are so arranged with respect to the core .r of the mold. which may be turned around the hinge 1' and is furnished with a counter poise u, that when opening the mold the cover presses from above upon the upper lug, whereas when closing the mold the lower lug is acted on by the counter poise mentioned. In this manner the racks 7 F. I are moved when the mold is closed by the core .1 in the direction of the arrow Fig. 5, while before and during the closing of said mold they are returned to their initial position.

Fig. 9 shows the parts when the core is opened. and the corresponding position of the cooperating parts I, 1.1- is represented in full lines, whereas the other position is indicated by dotted lines.

Each of the bell-crank levers u u'-, u is furthermore provided with an arm or a pro jection which is adapted to release the checking part 0 of the lever m upon the rais ing, as well as lowering of the bar 2; that is to say, when the mold is closed and reopened; said releasing action may be eti ected, for instance. by the mediation of a lever 52, which laterally engages said projection.

If there are arranged distributing pipes at both sides of the pump, then the rotary slide belonging to the other pipes is actuated in exactly the same manner as just described. It is in such a case advantageous to couple the two releasing lever-s2 with each other. for instance, by means of a rod 3 (Fig. 9) so that the rotary slide of the one side, in the case of having inadvertently remained open, is automatically released and caused to return into the other position by the releasing ot' the rotary slide of the other side, '1'. e. before the pump commences to work again.

As all racks are in juxtaposition, Whereas the molds cooperating with one and the same rotary slide are some distance from each other and are .t'urthermore, generally distributed upon two sides of the melting pot, the arrangement of the arms of the bellcrank levers as shown in Fig. 9 cannot, of course, be employed without a proper adaptation and besides, attention must be paid to the fact that each arm of the bell-crank tering the notches serves also for securing the slide r in its place, 2'. e. for preventing its accidental displacement.

The machine operates as follows: The position of the rotary slide 9 at the beginning of the work is such that the distributing pipes c are closed against the pump, and that no metal can escape from the melt-- ing pot to the mold even if the pump is erroneously actuated as the slide at the time in question, is below the branching places 7' of said pipes. Of the molds at disposal any one may be used in the beginning and the other ones may be employed in any de-' sired succession, because each mold has a separate connection of its own (bell-crank rods and rack gear) with the rotary connecting rod The matrix is placed into the respective mold in known manner and thereafter that mold is closed. When closing the, mold, the cover or core :1: by its weight in the manner before described, forces the corresponding bar 1 upward whereby the bell-crank lever connected with said bar is turned into position indicated by dotted lines in Fig. 9. By this means the rotary slide 9 is turned so as to adjust it with regard to the respective distributing pipe, for instance, 6 At the same time the corresponding rack for instance Z, has been moved in the direction of the arrow (Fig. '5) and after it has sufficiently turned the bar 2', it is raised by the projection 7 of the corresponding cog wheel k so as to come out of action. It is now grasped by the catch arm.g and retained in that position. At the same time the lug z slips below the nose of the lever 2, without any change in'the position of the bar 2', but the connecting rod of the other distributing pipe is released in consequence of its positive connection with the other distributing pipe, so that it is allowed to drop into its general locking or closing position, if it was raised. As soon as the controlling pointer 12 is in its proper position, the bar is drawn upward, against the action of the spring 13, until it is automaticallylocked in its raised position by means of .the locking device 0. Thereafter the pump is operated until the mold has been properly charged. The other molds are filled with the molten metal in exact-1y the same manner. In the meantime the metal in the first mold'has cooled down so that this mold can be opened. To this effect, first the locking device 0 is released by means of the projections, so that the rod 2' is forced downward by the spring 13 (Fig. 1) and closes the inlet to all distributing pipes. At the same time, i. e. simultaneously with the lifting the mold cover, the corresponding racks Z, P, Z are moved into their initial position by the mediation of the respective rods, but the racks cannot turn the cog wheel 10 or the connecting rod 2', respectively, because they are prevented from such action by the catching arms 9 The racks Z Z Z and the cog wheels is,

N, if, the springs 14, and the catching arms q, 9 9 may be inclosed in a suitable casing, for instance, such as 16.

If distributing pipes 6 e e3 are connected with the pump at both sides of the lat-' ter, the manner of operation upon the other side is just the same as before described.

\Vhat I claim as new and desire to secure by Letters Patent is:

1. In a casting machine provided with a hand pump in combination, a melting potwithin which said pump is arranged, a plurality of molds adapted to be charged with the molten metal from said melting pot, distributing pipes connected to said pump, means for distributing the molten metal into said pipes for discharging it into .said molds, means between said pipes and the distributing means for operating the distributing pipes in harmony with the opening and closing of the corresponding molds, and means for actuating said operating means upon theintroduction of a core into a mold, substantially as described.

2. In a casting machine provided with a hand pump, in combination, a melting pot within which said pump is arranged, a plurality of molds adapted to be charged with the molten metal from said melting pot, a distributer for said metal connected to the sides of said pump, distributing pipes connected to said pump into which said metal is distributed, a rotary slide between said distributer and said pipes, means for. operating said slide to distribute the metal from said distributer into said pipes in harmony with the opening of said molds, substantially as described.

3. In a castingmachine provided with a hand pump, in combination, a melting pot the same, distributers laterally arranged upon said pump, distributing pipes connected with said pump into whlchsaid metal is distributed, a rotary slide provided with i an opening and arranged between said distributers and said pipes, means for operating said slide to close said distributing pipes, means for operating said slide for distributing the metal from said distributers into said pipes. a counter-balanced core within each of said molds for operating said slide operating means upon the introduction of said core for distributing the molten metal into one of said pipes and into said mold, substantially as described.

r. In a casting machine provided with a hand pump within the melting pot thereof, a plurality of molds in juxtaposition to said pot adapted to be charged successively with the metal from said pot. distributing means for distributing the charge contained in said pot, comprising distributers and distributing pipes. a rotary slide provided with an opening arranged between said distributcrs and said pipes. a rotary rod connected to said slide. rack gears and a system of levers for rotating said rod. means for oper ating said levers upon the operation of a core for adjusting the opening of said r0- tary slides to communicate with one of the distributing pipes. means for locking said rod in this position. and means for releasing said rod for dropping said slide into its position for locking said distributing pipes, substantially as described.

In a casting machine of the character described a melting pot. a hand operated pump within said pot. distributers radially disposed to said pump, distributing pipes connected to said pump, a rotary slide provided with an opening and arranged between said distributers and said pipes. molds in juxtaposition to said pot. means for retatin said slide upon the operation of the core of one of said molds for forming a connnunication between the distributer, one of the distributing pipes and said mold, means for locking said slide in this position, and means for returning said slide into its position interrupting the communication between said distributing pipes and said distributers at the end of the charging period for said molds. substantially as described.

6. In a casting machine of the character described. a melting pot, a hand operated pump within said pot, distributers. laterally disposed to said pump. distributing pipes connected with said pump, a rotary slide provided with openings and arranged between said distrihuters and said pipes, molds in juxtaposition to said pot, counter-balanced cores for said molds, a rotary sliding rod carrying said slide. means for normally holding said slide in its lower position for interrupting the communication between said distributers and said pipes, means operated by the operation of one of said cores for raising said slide to establish a communication between said distributers and one of said distributing pipes corresponding to the mold the core of which has been operated, means for locking the parts in their respee tive positions during the charging period, and means for operating the slide returning means after the mold has been charged. substantially as described.

In testimony whereof I atlix my signature in presence of two witnesses.

ADOLF LEINWEBER.

\Vitnesses:

A. V. \V. Cones, RlCHARD LEMP. 

